CN207732501U - A kind of contactor type double-power supply switching device - Google Patents
A kind of contactor type double-power supply switching device Download PDFInfo
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- CN207732501U CN207732501U CN201721829737.XU CN201721829737U CN207732501U CN 207732501 U CN207732501 U CN 207732501U CN 201721829737 U CN201721829737 U CN 201721829737U CN 207732501 U CN207732501 U CN 207732501U
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- contactor
- power supply
- monitor
- intermediate relay
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 20
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Abstract
The utility model discloses a kind of contactor type double-power supply switching devices, including first contactor, second contactor, the first intermediate relay, the second intermediate relay, the first supply monitor, second source monitor, copper bus-bar and switch；The lower end of first contactor and second contactor connect to form first line and the second circuit with two groups of three phase mains respectively；It is docked by three copper bus-bars the upper end of first contactor and second contactor；First supply monitor monitors that the state of first line, second source monitor monitor the state of the second circuit；First intermediate relay and the second intermediate relay are connected across between first line and the second circuit simultaneously, and access switch.A kind of contactor type double-power supply switching device of the utility model can ensure that the time of power supply switching is short (its conversion time is within 50 milliseconds), and can guarantee that apparatus structure is simple, long-time reliably working, it has maintenance to be easy, and failure rate is low, the advantages such as cheap.
Description
Technical field
The utility model is related to a kind of contactor type double-power supply switching devices for power engineering field.
Background technology
Double-power supply switching device is a kind of power supply alternative automatic switchover system.Under normal operating conditions, at main power source
In in normal voltage range, load is connected to always main power source.When main power source breaks down, load automatic switch is to spare
Power supply, after main power source restores normal, load automatically switches to main power source again.
Currently, STS static transfer switch (Static Transfer Switch) uses break-before-make (Break before
Make the uninterrupted switching between different input powers may be implemented in switching mode), and providing double-bus for single supply load supplies
Electricity.STS static state switching switch is mainly by intelligent control board, high-speed thyristor, breaker composition.Its switching time is shorter, standard
Switching time is 6ms.The basic application of STS includes the automated system of power industry, the power-supply system of petrochemical industry, computer
With telecommunication center, the automation in building and security system and other equipment very sensitive to power interruptions.Although its
Switching time is short, almost uninterrupted switching, but purchasing price is expensive, and silicon-controlled due to containing high power device, failure rate is higher,
It is very difficult to safeguard, need to arrive the repair of fixed point professional institution.
Another current double-power supply switching device is ATS (Automatictransfer switching
Equipment), automatic change-over.ATS is used primarily in emergency power supply system, by load circuit from an automatic changing-over of power supply
To the device for switching of another (spare) power supply, to ensure that important load is continuous, reliability service.ATS is mechanical structure, when conversion
Between be 100 milliseconds or more, load transients can be caused to power off.It is suitble to illumination, electric machinery load.Since ATS is mechanical structure, cut
It changes that the time is longer, is not suitable for the equipment especially sensitive to power supply.Secondly, it is existing it the market price it is also relatively high, after failure
It needs to professional institution to repair, but low compared with STS failure rates.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of contactor type dual power supply switching dress
It sets, it is switched fast between capable of realizing dual power supply, and reliability is high.
Realizing a kind of technical solution of above-mentioned purpose is：A kind of contactor type double-power supply switching device, including the first contact
Device, second contactor, the first intermediate relay, the second intermediate relay, the first supply monitor, second source monitor, copper
Busbar and switch；
The lower end of the first contactor connect to form first line with the first three-phase dynamic electricity source；The second contactor
Lower end connect to form the second circuit with the second three-phase dynamic electricity source；The upper end of the first contactor and the second contactor
It is docked by three copper bus-bars；
First supply monitor is arranged between first three-phase dynamic electricity source and the first contactor, monitoring
The state of the first line, the second source monitor setting is in second three-phase dynamic electricity source and second contact
Between device, the state of the second circuit is monitored；
First intermediate relay and second intermediate relay are connected across the first line and described simultaneously
Between second circuit, and access the switch.
Further, first three-phase dynamic electricity source and second three-phase dynamic electricity source are AC380 power supplys.
Further, the switch is third gear rotary switch.
A kind of contactor type double-power supply switching device of the utility model can ensure time short (its turn of power supply switching
The time is changed within 50 milliseconds), and can guarantee that apparatus structure is simple, long-time reliably working has maintenance to be easy, failure
Rate is low, the advantages such as cheap.
Description of the drawings
Fig. 1 is a kind of installation signal of the device of contactor type double-power supply switching device of the utility model in the line
Figure；
Fig. 2 is a kind of schematic diagram of the function of contactor type double-power supply switching device of the utility model.
Specific implementation mode
In order to preferably understand the technical solution of the utility model, below by specifically embodiment and combine
Attached drawing is described in detail：
A kind of contactor type double-power supply switching device of the utility model, including first contactor 1KM1, second contactor
1KM2, the first intermediate relay KA1, the second intermediate relay KA2, the first supply monitor KE1, second source monitor KE2,
The gear rotary switches of copper bus-bar K1 and three SA1.
It please refers to Fig.1 and Fig. 2, the lower end of first contactor 1KM1 connect to form first line with the first three-phase dynamic electricity source
A1；The lower end of second contactor 1KM2 connect to form the second circuit 2 with the second three-phase dynamic electricity source A2；First three-phase dynamic electricity source
A1 and the second three-phase dynamic electricity source A2 is AC380 power supplys.The upper end of first contactor 1KM1 and second contactor 1KM2 pass through three
The K1 docking of root copper bus-bar.1KM1 is arranged between the first three-phase dynamic electricity source A1 and first contactor in first supply monitor KE1,
Monitor that the state of first line 1, second source monitor KE2 are arranged in the second three-phase dynamic electricity source A2 and second contactor 1KM2
Between, monitor the channel status of the second circuit 2.First intermediate relay KA1 and the second intermediate relay KA2 are connected across simultaneously
Between first line 1 and the second circuit 2, and access three gear rotary switch SA1.
A kind of operation principle of contactor type double-power supply switching device of the utility model is as follows：
(1) when third gear rotary switch SA1 is placed in power supply A1, the auxiliary contact 11 of third gear rotary switch SA1 and 12 feet, 21
It is connected with 22 feet, the foot of 13 and 14 feet, 23 and 24 disconnects.If power supply A1 is normal, supply monitor KE1 normally-closed contacts NC is disconnected
It opening, normally opened contact NO is closed, and the contactor 1KM1 coils of power supply A1 obtain electric at this time, and main contacts is attracted, and power supply A1 powers to the load,
Power supply A2 is in stand-by state.When power supply A1 failures, supply monitor KE1 normally-closed contacts NC is closed, and normally opened contact NO is disconnected,
Intermediate relay KA1 coils obtain electric, while 1KM1 coil losing electricities, and 1KM2 coils obtain electric, are at this time load supplying for power supply A2.When
When power supply A1 restores normal, power supply A1 power supplies are automatically switched to again.
(2) when third gear rotary switch SA1 is placed in power supply A2, the auxiliary contact 13 of third gear rotary switch SA1 and 14 feet, 23
It is connected with 24 feet, the foot of 11 and 12 feet, 21 and 22 disconnects.If power supply A2 is normal, supply monitor KE2 normally-closed contacts NC is disconnected
It opening, normally opened contact NO is closed, and the contactor 1KM2 coils of power supply A2 obtain electric at this time, and main contacts is attracted, and power supply A2 powers to the load,
Power supply A1 is in stand-by state.When power supply A2 failures, supply monitor KE2 normally-closed contacts NC is closed, and normally opened contact NO is disconnected,
Intermediate relay KA2 coils obtain electric, while 1KM2 coil losing electricities, and 1KM1 coils obtain electric, are at this time load supplying for power supply A1.When
When power supply A2 restores normal, power supply A2 power supplies are automatically switched to again.
(3) when third gear rotary switch SA1 is placed in centre, two-way electrical source of power is not load supplying at this time, is user
The maintenance of load is provided a convenient.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new
Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above
Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.
Claims (3)
1. a kind of contactor type double-power supply switching device, which is characterized in that including in first contactor, second contactor, first
Between relay, the second intermediate relay, the first supply monitor, second source monitor, copper bus-bar and switch；
The lower end of the first contactor connect to form first line with the first three-phase dynamic electricity source；Under the second contactor
End connect to form the second circuit with the second three-phase dynamic electricity source；The upper end of the first contactor and the second contactor passes through
Three copper bus-bar docking；
First supply monitor is arranged between first three-phase dynamic electricity source and the first contactor, described in monitoring
The state of first line, second source monitor setting second three-phase dynamic electricity source and the second contactor it
Between, monitor the state of the second circuit；
First intermediate relay and second intermediate relay are connected across the first line and described second simultaneously
Between circuit, and access the switch.
2. a kind of contactor type double-power supply switching device according to claim 1, which is characterized in that first three-phase is dynamic
Power power supply and second three-phase dynamic electricity source are AC380 power supplys.
3. a kind of contactor type double-power supply switching device according to claim 1, which is characterized in that the switch is third gear
Rotary switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829737.XU CN207732501U (en) | 2017-12-25 | 2017-12-25 | A kind of contactor type double-power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829737.XU CN207732501U (en) | 2017-12-25 | 2017-12-25 | A kind of contactor type double-power supply switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207732501U true CN207732501U (en) | 2018-08-14 |
Family
ID=63086466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721829737.XU Active CN207732501U (en) | 2017-12-25 | 2017-12-25 | A kind of contactor type double-power supply switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207732501U (en) |
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2017
- 2017-12-25 CN CN201721829737.XU patent/CN207732501U/en active Active
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